How to Fix an LG Washer Rotor Position Sensor
An LG Direct Drive washer that throws LE, usually during spin, often has a failed rotor position (hall) sensor on the stator. Testing and replacing it is an intermediate, 35 to 45-minute job worked from the rear, and on many models the sensor is a cheap plug-in module.
What the sensor does#
The hall sensor tells the control board exactly where the rotor is so the Direct Drive motor can commutate smoothly. When it degrades, the board loses that feedback at high speed and posts LE, which is why the fault often shows in spin but not in the slow wash phase. On many post-2010 models the sensor swaps out on its own; on older ones it is built into the stator (4417EA1002Y) and the stator replaces as a unit.
Before you start#
| Category | What you need |
|---|---|
| Tools | Phillips #2 screwdriver, 14 mm socket with ratchet or breaker bar, 10 mm socket, multimeter, blue threadlocker |
| Part | Rotor position (hall) sensor, or the full stator 4417EA1002Y if the sensor is integrated |
| Time and level | 35 to 45 minutes, Intermediate |
Safety warning: Disconnect power and wait 5 minutes for capacitor discharge. The rotor bolt requires significant torque to remove — brace the drum from the front to prevent rotation.
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
Licensed & Insured · 90-Day Warranty · Same-Day Service
Step-by-step#
1 - Open the back. Unplug the washer and pull it out for room to work. Remove the large rear service panel (10 to 14 Phillips screws) to expose the circular rotor, the outer ring carrying the magnets.
2 - Remove the rotor. A single 14 mm center bolt holds the rotor to the drum shaft, torqued to about 35 foot-pounds, so brace the drum from the front before turning it counterclockwise. Pull the rotor straight off, rocking it against the magnets' pull, and set it magnet-side up, checking the magnets for cracks.
3 - Find and inspect the sensor. With the rotor off, the stator is exposed. The hall sensor sits on it, fed by a 3-wire harness to a small connector on the frame. Trace that harness and check the wires and connector pins for damage, fraying, or green corrosion.
4 - Test the sensor. Disconnect the 3-wire plug and read resistance across the pairs: wire 1 to 2 and wire 2 to 3 should each be about 4,000 to 12,000 ohms, and wire 1 to 3 about 8,000 to 24,000 ohms. Any open (OL) or near-zero reading, or any continuity from a wire to the stator bracket, means the sensor has failed.
5 - Replace the sensor or stator. If yours is a plug-in module, release the tab, pull the old sensor, and click the new one in. If it is integrated, remove the 6 stator bolts (10 mm), disconnect the main power and sensor harnesses, fit the new stator (4417EA1002Y), and torque the 6 bolts evenly in a star pattern to 8 to 10 foot-pounds.
6 - Reinstall the rotor. Wipe the shaft clean, slide the rotor on aligned to its keyed flat so it seats flush with an even air gap, then put blue threadlocker on the center bolt, start it by hand, and torque to 35 foot-pounds so it cannot loosen at spin speeds.
7 - Test. Refit the rear panel, run a Rinse and Spin with no laundry, and watch the drum ramp through the spin stages with no LE. Then run LG Smart Diagnosis in the ThinQ app to confirm the sensor signal and motor speeds.
Troubleshooting after the swap#
- Sensor tests good but LE persists: the fault is in the harness to the control board. Inspect the whole run, especially at grommets and near the tub springs.
- New sensor fails fast: a cracked rotor magnet creates an irregular field that overloads it. Inspect the magnets.
- Intermittent LE at high speed: the stator bolts are loose, shifting the air gap. Re-torque all 6.
- UE appears after the fix: the LE was masking a balance issue; check the shock absorbers (4901ER2003A) and springs.
Safety First — Know the Risks
High-voltage components and pressurized water lines create flood and shock risk. A single loose fitting can cause thousands in water damage. Our techs are licensed and insured — let them handle the risk.
Licensed & Insured · 90-Day Warranty · Same-Day Service
Appliance Repair Technician · 11 years experience
Experienced technician with 11 years specializing in Frigidaire and Electrolux refrigerator and dryer repair with a focus on safety.
